I am an atmospheric scientist particularly concerned with biogeochemical connections
with the environment and global pollution. For me, this study is part of a broader
understanding of the basic geophysics of living planets in the universe.

I 've been working at NASA's Ames Research Center since 1989. My research has
also taken me so far to Washington State University, Colorado State University,
the Max Planck Institute for Chemistry in Mainz, and the National Center for
Atmospheric Research.

My interests have always centered on emissions from natural sources which strongly
affect our admittedly human-perturbed atmosphere, the tropical/subtropical
atmosphere, and the way that natural and pollution emissions make their way into the global
atmosphere. There they can travel intact for amazing distances!